cc: Rename PrioritizedTexture to PrioritizedResource.

cc/prioritized_resource_manager.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
-#include "cc/prioritized_texture_manager.h"
+#include "cc/prioritized_resource_manager.h"
 
 #include "base/debug/trace_event.h"
 #include "base/stl_util.h"
-#include "cc/prioritized_texture.h"
+#include "cc/prioritized_resource.h"
 #include "cc/priority_calculator.h"
 #include "cc/proxy.h"
 #include <algorithm>
 
 using namespace std;
 
 namespace cc {
 
-PrioritizedTextureManager::PrioritizedTextureManager(size_t maxMemoryLimitBytes, int, int pool)
+PrioritizedResourceManager::PrioritizedResourceManager(size_t maxMemoryLimitBytes, int, int pool)
     : m_maxMemoryLimitBytes(maxMemoryLimitBytes)
     , m_externalPriorityCutoff(PriorityCalculator::allowEverythingCutoff())
     , m_memoryUseBytes(0)
     , m_memoryAboveCutoffBytes(0)
     , m_memoryAvailableBytes(0)
     , m_pool(pool)
     , m_backingsTailNotSorted(false)
     , m_memoryVisibleBytes(0)
     , m_memoryVisibleAndNearbyBytes(0)
     , m_memoryVisibleLastPushedBytes(0)
     , m_memoryVisibleAndNearbyLastPushedBytes(0)
 {
 }
 
-PrioritizedTextureManager::~PrioritizedTextureManager()
+PrioritizedResourceManager::~PrioritizedResourceManager()
 {
     while (m_textures.size() > 0)
         unregisterTexture(*m_textures.begin());
 
     deleteUnlinkedEvictedBackings();
     DCHECK(m_evictedBackings.empty());
 
     // Each remaining backing is a leaked opengl texture. There should be none.
     DCHECK(m_backings.empty());
 }
 
-size_t PrioritizedTextureManager::memoryVisibleBytes() const
+size_t PrioritizedResourceManager::memoryVisibleBytes() const
 {
     DCHECK(Proxy::isImplThread());
     return m_memoryVisibleLastPushedBytes;
 }
 
-size_t PrioritizedTextureManager::memoryVisibleAndNearbyBytes() const
+size_t PrioritizedResourceManager::memoryVisibleAndNearbyBytes() const
 {
     DCHECK(Proxy::isImplThread());
     return m_memoryVisibleAndNearbyLastPushedBytes;
 }
 
-void PrioritizedTextureManager::prioritizeTextures()
+void PrioritizedResourceManager::prioritizeTextures()
 {
-    TRACE_EVENT0("cc", "PrioritizedTextureManager::prioritizeTextures");
+    TRACE_EVENT0("cc", "PrioritizedResourceManager::prioritizeTextures");
     DCHECK(Proxy::isMainThread());
 
     // Sorting textures in this function could be replaced by a slightly
     // modified O(n) quick-select to partition textures rather than
     // sort them (if performance of the sort becomes an issue).
 
     TextureVector& sortedTextures = m_tempTextureVector;
     sortedTextures.clear();
 
     // Copy all textures into a vector, sort them, and collect memory requirements statistics.
     m_memoryVisibleBytes = 0;
     m_memoryVisibleAndNearbyBytes = 0;
     for (TextureSet::iterator it = m_textures.begin(); it != m_textures.end(); ++it) {
-        PrioritizedTexture* texture = (*it);
+        PrioritizedResource* texture = (*it);
         sortedTextures.push_back(texture);
         if (PriorityCalculator::priorityIsHigher(texture->requestPriority(), PriorityCalculator::allowVisibleOnlyCutoff()))
             m_memoryVisibleBytes += texture->bytes();
         if (PriorityCalculator::priorityIsHigher(texture->requestPriority(), PriorityCalculator::allowVisibleAndNearbyCutoff()))
-            m_memoryVisibleAndNearbyBytes += texture->bytes();        
+            m_memoryVisibleAndNearbyBytes += texture->bytes();
     }
     std::sort(sortedTextures.begin(), sortedTextures.end(), compareTextures);
 
     // Compute a priority cutoff based on memory pressure
     m_memoryAvailableBytes = m_maxMemoryLimitBytes;
     m_priorityCutoff = m_externalPriorityCutoff;
     size_t memoryBytes = 0;
     for (TextureVector::iterator it = sortedTextures.begin(); it != sortedTextures.end(); ++it) {
         if ((*it)->isSelfManaged()) {
             // Account for self-managed memory immediately by reducing the memory
@@ skipping 11 matching lines @@
                 m_priorityCutoff = (*it)->requestPriority();
                 break;
             }
             memoryBytes = newMemoryBytes;
         }
     }
 
     // Disallow any textures with priority below the external cutoff to have backings.
     size_t memoryLinkedTexturesBytes = 0;
     for (TextureVector::iterator it = sortedTextures.begin(); it != sortedTextures.end(); ++it) {
-        PrioritizedTexture* texture = (*it);
+        PrioritizedResource* texture = (*it);
         if (!PriorityCalculator::priorityIsHigher(texture->requestPriority(), m_externalPriorityCutoff) &&
             texture->haveBackingTexture())
             texture->unlink();
     }
     DCHECK(memoryLinkedTexturesBytes <= m_memoryAvailableBytes);
 
     // Only allow textures if they are higher than the cutoff. All textures
     // of the same priority are accepted or rejected together, rather than
     // being partially allowed randomly.
     m_memoryAboveCutoffBytes = 0;
     for (TextureVector::iterator it = sortedTextures.begin(); it != sortedTextures.end(); ++it) {
         bool isAbovePriorityCutoff = PriorityCalculator::priorityIsHigher((*it)->requestPriority(), m_priorityCutoff);
         (*it)->setAbovePriorityCutoff(isAbovePriorityCutoff);
         if (isAbovePriorityCutoff && !(*it)->isSelfManaged())
             m_memoryAboveCutoffBytes += (*it)->bytes();
     }
     sortedTextures.clear();
 
     DCHECK(m_memoryAboveCutoffBytes <= m_memoryAvailableBytes);
     DCHECK(memoryAboveCutoffBytes() <= maxMemoryLimitBytes());
 }
 
-void PrioritizedTextureManager::pushTexturePrioritiesToBackings()
+void PrioritizedResourceManager::pushTexturePrioritiesToBackings()
 {
-    TRACE_EVENT0("cc", "PrioritizedTextureManager::pushTexturePrioritiesToBackings");
+    TRACE_EVENT0("cc", "PrioritizedResourceManager::pushTexturePrioritiesToBackings");
     DCHECK(Proxy::isImplThread() && Proxy::isMainThreadBlocked());
 
     assertInvariants();
     for (BackingList::iterator it = m_backings.begin(); it != m_backings.end(); ++it)
         (*it)->updatePriority();
     sortBackings();
     assertInvariants();
 
     // Push memory requirements to the impl thread structure.
     m_memoryVisibleLastPushedBytes = m_memoryVisibleBytes;
     m_memoryVisibleAndNearbyLastPushedBytes = m_memoryVisibleAndNearbyBytes;
 }
 
-void PrioritizedTextureManager::updateBackingsInDrawingImplTree()
+void PrioritizedResourceManager::updateBackingsInDrawingImplTree()
 {
-    TRACE_EVENT0("cc", "PrioritizedTextureManager::updateBackingsInDrawingImplTree");
+    TRACE_EVENT0("cc", "PrioritizedResourceManager::updateBackingsInDrawingImplTree");
     DCHECK(Proxy::isImplThread() && Proxy::isMainThreadBlocked());
 
     assertInvariants();
     for (BackingList::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
-        PrioritizedTexture::Backing* backing = (*it);
+        PrioritizedResource::Backing* backing = (*it);
         backing->updateInDrawingImplTree();
     }
     sortBackings();
     assertInvariants();
 }
 
-void PrioritizedTextureManager::sortBackings()
+void PrioritizedResourceManager::sortBackings()
 {
-    TRACE_EVENT0("cc", "PrioritizedTextureManager::sortBackings");
+    TRACE_EVENT0("cc", "PrioritizedResourceManager::sortBackings");
     DCHECK(Proxy::isImplThread());
 
     // Put backings in eviction/recycling order.
     m_backings.sort(compareBackings);
     m_backingsTailNotSorted = false;
 }
 
-void PrioritizedTextureManager::clearPriorities()
+void PrioritizedResourceManager::clearPriorities()
 {
     DCHECK(Proxy::isMainThread());
     for (TextureSet::iterator it = m_textures.begin(); it != m_textures.end(); ++it) {
         // FIXME: We should remove this and just set all priorities to
         //        PriorityCalculator::lowestPriority() once we have priorities
         //        for all textures (we can't currently calculate distances for
         //        off-screen textures).
         (*it)->setRequestPriority(PriorityCalculator::lingeringPriority((*it)->requestPriority()));
     }
 }
 
-bool PrioritizedTextureManager::requestLate(PrioritizedTexture* texture)
+bool PrioritizedResourceManager::requestLate(PrioritizedResource* texture)
 {
     DCHECK(Proxy::isMainThread());
 
     // This is already above cutoff, so don't double count it's memory below.
     if (texture->isAbovePriorityCutoff())
         return true;
 
     // Allow textures that have priority equal to the cutoff, but not strictly lower.
     if (PriorityCalculator::priorityIsLower(texture->requestPriority(), m_priorityCutoff))
         return false;
 
     // Disallow textures that do not have a priority strictly higher than the external cutoff.
     if (!PriorityCalculator::priorityIsHigher(texture->requestPriority(), m_externalPriorityCutoff))
         return false;
 
     size_t newMemoryBytes = m_memoryAboveCutoffBytes + texture->bytes();
     if (newMemoryBytes > m_memoryAvailableBytes)
         return false;
 
     m_memoryAboveCutoffBytes = newMemoryBytes;
     texture->setAbovePriorityCutoff(true);
     return true;
 }
 
-void PrioritizedTextureManager::acquireBackingTextureIfNeeded(PrioritizedTexture* texture, ResourceProvider* resourceProvider)
+void PrioritizedResourceManager::acquireBackingTextureIfNeeded(PrioritizedResource* texture, ResourceProvider* resourceProvider)
 {
     DCHECK(Proxy::isImplThread() && Proxy::isMainThreadBlocked());
     DCHECK(!texture->isSelfManaged());
     DCHECK(texture->isAbovePriorityCutoff());
     if (texture->backing() || !texture->isAbovePriorityCutoff())
         return;
 
     // Find a backing below, by either recycling or allocating.
-    PrioritizedTexture::Backing* backing = 0;
+    PrioritizedResource::Backing* backing = 0;
 
     // First try to recycle
     for (BackingList::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
         if (!(*it)->canBeRecycled())
             break;
         if ((*it)->size() == texture->size() && (*it)->format() == texture->format()) {
             backing = (*it);
             m_backings.erase(it);
             break;
         }
@@ skipping 10 matching lines @@
     if (backing->owner())
         backing->owner()->unlink();
     texture->link(backing);
     m_backings.push_back(backing);
     m_backingsTailNotSorted = true;
 
     // Update the backing's priority from its new owner.
     backing->updatePriority();
 }
 
-bool PrioritizedTextureManager::evictBackingsToReduceMemory(size_t limitBytes, int priorityCutoff, EvictionPolicy evictionPolicy, ResourceProvider* resourceProvider)
+bool PrioritizedResourceManager::evictBackingsToReduceMemory(size_t limitBytes, int priorityCutoff, EvictionPolicy evictionPolicy, ResourceProvider* resourceProvider)
 {
     DCHECK(Proxy::isImplThread());
     if (memoryUseBytes() <= limitBytes && PriorityCalculator::allowEverythingCutoff() == priorityCutoff)
         return false;
 
     // Destroy backings until we are below the limit,
     // or until all backings remaining are above the cutoff.
     while (m_backings.size() > 0) {
-        PrioritizedTexture::Backing* backing = m_backings.front();
+        PrioritizedResource::Backing* backing = m_backings.front();
         if (memoryUseBytes() <= limitBytes && 
             PriorityCalculator::priorityIsHigher(backing->requestPriorityAtLastPriorityUpdate(), priorityCutoff))
             break;
         if (evictionPolicy == EvictOnlyRecyclable && !backing->canBeRecycled())
             break;
         evictFirstBackingResource(resourceProvider);
     }
     return true;
 }
 
-void PrioritizedTextureManager::reduceMemory(ResourceProvider* resourceProvider)
+void PrioritizedResourceManager::reduceMemory(ResourceProvider* resourceProvider)
 {
     DCHECK(Proxy::isImplThread() && Proxy::isMainThreadBlocked());
 
     // Note that it will not always be the case that memoryUseBytes() <= maxMemoryLimitBytes(),
-    // because we are not at liberty to delete textures that are referenced by the impl tree to 
+    // because we are not at liberty to delete textures that are referenced by the impl tree to
     // get more space.
 
     evictBackingsToReduceMemory(m_memoryAvailableBytes, PriorityCalculator::allowEverythingCutoff(), EvictOnlyRecyclable, resourceProvider);
 
     // We currently collect backings from deleted textures for later recycling.
     // However, if we do that forever we will always use the max limit even if
     // we really need very little memory. This should probably be solved by reducing the
     // limit externally, but until then this just does some "clean up" of unused
     // backing textures (any more than 10%).
     size_t wastedMemory = 0;
     for (BackingList::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
         if ((*it)->owner())
             break;
         wastedMemory += (*it)->bytes();
     }
     size_t tenPercentOfMemory = m_memoryAvailableBytes / 10;
     if (wastedMemory > tenPercentOfMemory)
         evictBackingsToReduceMemory(memoryUseBytes() - (wastedMemory - tenPercentOfMemory), PriorityCalculator::allowEverythingCutoff(), EvictOnlyRecyclable, resourceProvider);
 
     // Unlink all evicted backings
     for (BackingList::const_iterator it = m_evictedBackings.begin(); it != m_evictedBackings.end(); ++it) {
         if ((*it)->owner())
             (*it)->owner()->unlink();
     }
 
     // And clear the list of evicted backings
     deleteUnlinkedEvictedBackings();
 }
 
-void PrioritizedTextureManager::clearAllMemory(ResourceProvider* resourceProvider)
+void PrioritizedResourceManager::clearAllMemory(ResourceProvider* resourceProvider)
 {
     DCHECK(Proxy::isImplThread() && Proxy::isMainThreadBlocked());
     DCHECK(resourceProvider);
     evictBackingsToReduceMemory(0, PriorityCalculator::allowEverythingCutoff(), EvictAnything, resourceProvider);
 }
 
-bool PrioritizedTextureManager::reduceMemoryOnImplThread(size_t limitBytes, int priorityCutoff, ResourceProvider* resourceProvider)
+bool PrioritizedResourceManager::reduceMemoryOnImplThread(size_t limitBytes, int priorityCutoff, ResourceProvider* resourceProvider)
 {
     DCHECK(Proxy::isImplThread());
     DCHECK(resourceProvider);
     // If we are in the process of uploading a new frame then the backings at the very end of
     // the list are not sorted by priority. Sort them before doing the eviction.
     if (m_backingsTailNotSorted)
         sortBackings();
     return evictBackingsToReduceMemory(limitBytes, priorityCutoff, EvictAnything, resourceProvider);
 }
 
-void PrioritizedTextureManager::getEvictedBackings(BackingList& evictedBackings)
+void PrioritizedResourceManager::getEvictedBackings(BackingList& evictedBackings)
 {
     DCHECK(Proxy::isImplThread());
     evictedBackings.clear();
     evictedBackings.insert(evictedBackings.begin(), m_evictedBackings.begin(), m_evictedBackings.end());
 }
 
-void PrioritizedTextureManager::unlinkEvictedBackings(const BackingList& evictedBackings)
+void PrioritizedResourceManager::unlinkEvictedBackings(const BackingList& evictedBackings)
 {
     DCHECK(Proxy::isMainThread());
     for (BackingList::const_iterator it = evictedBackings.begin(); it != evictedBackings.end(); ++it) {
-        PrioritizedTexture::Backing* backing = (*it);
+        PrioritizedResource::Backing* backing = (*it);
         if (backing->owner())
             backing->owner()->unlink();
     }
 }
 
-void PrioritizedTextureManager::deleteUnlinkedEvictedBackings()
+void PrioritizedResourceManager::deleteUnlinkedEvictedBackings()
 {
     DCHECK(Proxy::isMainThread() || (Proxy::isImplThread() && Proxy::isMainThreadBlocked()));
     BackingList newEvictedBackings;
     for (BackingList::const_iterator it = m_evictedBackings.begin(); it != m_evictedBackings.end(); ++it) {
-        PrioritizedTexture::Backing* backing = (*it);
+        PrioritizedResource::Backing* backing = (*it);
         if (backing->owner())
             newEvictedBackings.push_back(backing);
         else
             delete backing;
     }
     m_evictedBackings.swap(newEvictedBackings);
 }
 
-bool PrioritizedTextureManager::linkedEvictedBackingsExist() const
+bool PrioritizedResourceManager::linkedEvictedBackingsExist() const
 {
     for (BackingList::const_iterator it = m_evictedBackings.begin(); it != m_evictedBackings.end(); ++it) {
         if ((*it)->owner())
             return true;
     }
     return false;
 }
 
-void PrioritizedTextureManager::registerTexture(PrioritizedTexture* texture)
+void PrioritizedResourceManager::registerTexture(PrioritizedResource* texture)
 {
     DCHECK(Proxy::isMainThread());
     DCHECK(texture);
-    DCHECK(!texture->textureManager());
+    DCHECK(!texture->resourceManager());
     DCHECK(!texture->backing());
     DCHECK(!ContainsKey(m_textures, texture));
 
     texture->setManagerInternal(this);
     m_textures.insert(texture);
 
 }
 
-void PrioritizedTextureManager::unregisterTexture(PrioritizedTexture* texture)
+void PrioritizedResourceManager::unregisterTexture(PrioritizedResource* texture)
 {
     DCHECK(Proxy::isMainThread() || (Proxy::isImplThread() && Proxy::isMainThreadBlocked()));
     DCHECK(texture);
     DCHECK(ContainsKey(m_textures, texture));
 
     returnBackingTexture(texture);
     texture->setManagerInternal(0);
     m_textures.erase(texture);
     texture->setAbovePriorityCutoff(false);
 }
 
-void PrioritizedTextureManager::returnBackingTexture(PrioritizedTexture* texture)
+void PrioritizedResourceManager::returnBackingTexture(PrioritizedResource* texture)
 {
     DCHECK(Proxy::isMainThread() || (Proxy::isImplThread() && Proxy::isMainThreadBlocked()));
     if (texture->backing())
         texture->unlink();
 }
 
-PrioritizedTexture::Backing* PrioritizedTextureManager::createBacking(gfx::Size size, GLenum format, ResourceProvider* resourceProvider)
+PrioritizedResource::Backing* PrioritizedResourceManager::createBacking(gfx::Size size, GLenum format, ResourceProvider* resourceProvider)
 {
     DCHECK(Proxy::isImplThread() && Proxy::isMainThreadBlocked());
     DCHECK(resourceProvider);
     ResourceProvider::ResourceId resourceId = resourceProvider->createResource(m_pool, size, format, ResourceProvider::TextureUsageAny);
-    PrioritizedTexture::Backing* backing = new PrioritizedTexture::Backing(resourceId, resourceProvider, size, format);
+    PrioritizedResource::Backing* backing = new PrioritizedResource::Backing(resourceId, resourceProvider, size, format);
     m_memoryUseBytes += backing->bytes();
     return backing;
 }
 
-void PrioritizedTextureManager::evictFirstBackingResource(ResourceProvider* resourceProvider)
+void PrioritizedResourceManager::evictFirstBackingResource(ResourceProvider* resourceProvider)
 {
     DCHECK(Proxy::isImplThread());
     DCHECK(resourceProvider);
     DCHECK(!m_backings.empty());
-    PrioritizedTexture::Backing* backing = m_backings.front();
+    PrioritizedResource::Backing* backing = m_backings.front();
 
     // Note that we create a backing and its resource at the same time, but we
     // delete the backing structure and its resource in two steps. This is because
     // we can delete the resource while the main thread is running, but we cannot
     // unlink backings while the main thread is running.
     backing->deleteResource(resourceProvider);
     m_memoryUseBytes -= backing->bytes();
     m_backings.pop_front();
     m_evictedBackings.push_back(backing);
 }
 
-void PrioritizedTextureManager::assertInvariants()
+void PrioritizedResourceManager::assertInvariants()
 {
 #ifndef NDEBUG
     DCHECK(Proxy::isImplThread() && Proxy::isMainThreadBlocked());
 
     // If we hit any of these asserts, there is a bug in this class. To see
     // where the bug is, call this function at the beginning and end of
     // every public function.
 
     // Backings/textures must be doubly-linked and only to other backings/textures in this manager.
     for (BackingList::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
         if ((*it)->owner()) {
             DCHECK(ContainsKey(m_textures, (*it)->owner()));
             DCHECK((*it)->owner()->backing() == (*it));
         }
     }
     for (TextureSet::iterator it = m_textures.begin(); it != m_textures.end(); ++it) {
-        PrioritizedTexture* texture = (*it);
-        PrioritizedTexture::Backing* backing = texture->backing();
+        PrioritizedResource* texture = (*it);
+        PrioritizedResource::Backing* backing = texture->backing();
         if (backing) {
             if (backing->resourceHasBeenDeleted()) {
                 DCHECK(std::find(m_backings.begin(), m_backings.end(), backing) == m_backings.end());
                 DCHECK(std::find(m_evictedBackings.begin(), m_evictedBackings.end(), backing) != m_evictedBackings.end());
             } else {
                 DCHECK(std::find(m_backings.begin(), m_backings.end(), backing) != m_backings.end());
                 DCHECK(std::find(m_evictedBackings.begin(), m_evictedBackings.end(), backing) == m_evictedBackings.end());
             }
             DCHECK(backing->owner() == texture);
         }
     }
 
     // At all times, backings that can be evicted must always come before
     // backings that can't be evicted in the backing texture list (otherwise
     // reduceMemory will not find all textures available for eviction/recycling).
     bool reachedUnrecyclable = false;
-    PrioritizedTexture::Backing* previous_backing = NULL;
+    PrioritizedResource::Backing* previous_backing = NULL;
     for (BackingList::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
-        PrioritizedTexture::Backing* backing = *it;
+        PrioritizedResource::Backing* backing = *it;
         if (previous_backing && (!m_backingsTailNotSorted || !backing->wasAbovePriorityCutoffAtLastPriorityUpdate()))
             DCHECK(compareBackings(previous_backing, backing));
         if (!backing->canBeRecycled())
             reachedUnrecyclable = true;
         if (reachedUnrecyclable)
             DCHECK(!backing->canBeRecycled());
         else
             DCHECK(backing->canBeRecycled());
         previous_backing = backing;
     }
 #endif
 }
 
 }  // namespace cc